BillionVerify
Verified Oct 15, 2026 ActiveChecks email addresses for syntax, MX, and SMTP validity before you send a campaign, with a bulk API.
Listed on EffectHub ·
Pricing
- Pricing model
- Freemium
- Paid options from
- $8/mo
- Billing
- Monthly
Free plan gives 20 credits each day you log in, up to 600 a month, with no card. The cheapest paid tier is $8 a month billed yearly ($96 a year for 240,000 credits); monthly, one-time and pay-as-you-go packs cost more per credit and credits never expire.
Use tool ↗About BillionVerify
BillionVerify checks email addresses one at a time or in bulk CSV lists, running syntax, domain, MX, SMTP, and reputation checks to flag addresses likely to bounce. It plugs into Mailchimp, HubSpot, Salesforce, SendGrid, Klaviyo, ActiveCampaign, Pipedrive, and Zapier so lists can be cleaned before a campaign goes out, and it exposes a real-time API for verifying addresses inside another app's signup flow. The free plan covers 600 verifications a month; the cheapest paid tier is $8/month billed annually for a much larger yearly credit allowance, with additional pay-as-you-go credit packs available above that. The product was previously reached at the domain emailverify.ai, which now redirects to its current address.
- Platforms
- Web · API
- API
- Yes
- Last verified
- Oct 15, 2026
Verified sources
- Pricing page: Free plan 20 credits a day up to 600 a month; yearly plan from $8 a month, $96 billed yearly for 240,000 credits; credits never expire (15 October 2026)billionverify.com ↗
- Terms of Service (effective 12 August 2026) are governed by Delaware law and name no legal entity; monthly plans now renew monthly with no minimum term (15 October 2026)billionverify.com ↗
Is BillionVerify legit?
We don’t label tools safe or unsafe. Below are the records we checked ourselves, each with the date we read it.
- Domain registered
- May 28, 2025 (1 year ago)Registry record (RDAP), registrar Cloudflare, Inc., looked up Sep 6, 2026
- TLS certificate
- Issued by Google Trust Services, valid until Dec 11, 2026Seen in our own connection to the site on Oct 15, 2026
- Last checked
- Oct 15, 2026The site answered
Pros & cons of BillionVerify
BillionVerify does one job — checking whether an email address is real and deliverable — and plugs that check into the marketing tools people already use rather than asking you to export and re-import lists. The free tier is generous enough to test on a small list, but the per-credit math on paid plans needs checking against how large your lists actually are.
Pros
- Free 600 verifications/month with no card required
- Direct integrations with major email and CRM platforms
- Real-time API for inline signup validation
- Bulk CSV processing for existing lists
Cons
- Cheapest paid plan requires annual billing to hit $8/month
- No public information on who runs the company or where it's based
- Reputation and spam-trap detection accuracy is not independently verifiable from the site alone
Best for
- Cleaning an email list before a cold outreach or newsletter send
- Verifying addresses at signup time via the API
- Teams already using Mailchimp, HubSpot, or Klaviyo who want a plug-in checker
Not for
- One-off checks of a handful of addresses, since the free tier already covers that without a paid plan
- Teams needing contact enrichment or lead data rather than just validity checking
Watch out: The old email-verification domain now redirects to the current one, so bookmarks or integrations pointed at the old address should be updated.
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